K + L^0.1 = 330 --> K = 330 - L^{1/10}
C = 11·K + 0.1·L
C = 11·(330 - L^{1/10}) + 0.1·L = L/10 - 11·L^{1/10} + 3630
C' = 1/10 - 11/(10·L^{9/10}) = 0 --> L = 11·11^{1/9} = 14.36
K = 330 - (11·11^{1/9})^{1/10} = 330 - 25937424601^{1/90} = 328.7
C = 11·(330 - 25937424601^{1/90}) + 0.1·(11·11^{1/9}) = 3630 - 99·11^{1/9}/10 = 3617 GE